William s



(No Model.)

. W. S. GOLWELL.

MEANS FOR PACKING PISTON AND, VALVE RODS. No. 313.180.

Patented Mar. 3, 1885.

WITNESSES: r4443? INVENTOE- llnrrno Srarns PATENT calm WILLIAM S. OOLWVELL, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO THE TRIPLE THERMIO MOTOROOMPANY, OF NEWV YORK, N. Y.

MEANS FOR PACKING PISTON AND VALVE RODS.

SPECIFICATION forming part of Letters Patent No. 313,180, dated March 3, 1885.

Application filed August 9, 1884. (No model.)

T all whom it may concern.-

Be it known that I, WILLIAM S. CoLwELL, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a certain new and useful Improvement in Means for Packing Piston and Valve Rods; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawing, which represents a longitudinal vertical section, and to the letters of reference marked thereon.

My invention relates to the packing of piston and valve rods of engines, particularly bisulphide-of-carbon engines; and it consists of a vacuum formed around a part of a piston or valve rod, and surrounding another part with oil and other parts with a-packing, as will hereinafter more fully and at large appear.

To enable others skilled in the art with which my invention is most nearly connected to make and use it, I will proceed to describe its construction and operation.

In the accompanying drawing, which forms part of this specification, A represents a sec tion of a cylinder-head of an engine, having a packing-chamber, B, in which, around the piston J, is placed a packing, f, and then a ring, E, ha'ving recesses a b, which communi' cate with eachother by a series of openings. The ring E is followed with packing g, and it by packing-glands O D, having a chamber, I, and cavity h, in which is a packing followed by a packing. The packing-glands O D are forced against the packing fg i bymea'ns of the screw-caps F F. The chamber I communicates with an oil-reservoir, G, by means of a pipe, 0, having a valve, 0. The recesses a b of the ring E communicate with a pipe, H, which may communicate with an exhaust mechanism of any known construction for causing a vacuum in the recesses a b.

By reference to the accompanyingdrawi n g. in connection with the foregoing description, the skillful mechanic will be enabled to construct my improvement. I will therefore proceed to describe the operation. The reservoir G is filled with oil, and the valve 0 is then opened, thereby filling the chamber I with oil. The

exhaust mechanism mentioned being put 'into operation, a vacuum or partial vacuum is formed in the recesses a b of the ring E. Now,

by properly compressing-the packings-fgi around the piston-rod .I through the medium 5 5 of the screw-caps F F, all leakage of vapor will be prevented, and by the peculiar arrangements of the several parts described the pressure of the atmosphere will always be exerted toward the joints.

The advantage ofthe hereinbefore-described method for packing piston and valve rods in a bisulphide-of-carbon engine will be apparent to persons conversant with the operations of vaponengineryn Having thus described my improvement, what I claim as of my invention is 1. In a rod-packing, the "combination of a head provided with a packing-chamber'anda ring interposed between the strata of packing 7o material, and a separate chamber containing a liquid packing, substantially as described.

2. In a rod-packing, the combination of a head provided with a chamber for containing a solid packing, a ring interposed between the strata of the solid packing, and a gland provided with a liquid-packing chamber, sub stantially as described.

3. In a rod-packing. the combination of a head provided with a chamber for containing a solid packing, and a gland having two chambers, one for a body of liquid in which the rod reciprocates and the other for solid packing, substantially as herein described.

4. In a rod-packing, the combination of a head provided with a chamber for containing a solid packing, a ring interposed between the strata thereof, and a gland provided with a liquid and a sol id packing chamber, substantially as herein described.

5. In a rod-packing, the combination of a head provided with a chamber containing nackin material and a rin inter aosed between the strata of packing. provided with chambers surrounding the rod and adapted to 9 5 be put in communication with a vacuum-producing device, substantially as herein described.

6. In a rod-packing, the combination of a head provided with a chamber containing packing material, and an interposed ring pro vided with a chamber or chambers adapted to be put in communication with a vacuum-producing device, and an oil-chamber surrounding the rod, substantially as herein described.

7. In a rod-packing, the combination of a head provided with a chamber containing packing material, and a chamber adapted to be put in communication with a Vacuum-pro ducing device, with a gland provided with an oil-chamber surrounding the rod, and a reservoir, substantially as herein described.

8. In a rod-packing, the combination of a head provided with a chamber containing packing material, a ring interposed between the strata of the packing, a separate oil-chamber surrounding the rod, and a packing-chamber beyond the oil-chamber, substantially as herein described.

9. In a rod-packing, the combination of a head provided with a chamber containing suitable packing material, a ring interposed -WILLIAM S. OOLVELL.

Witnesses:

JAMEs J. J OHNSTON, WM. E. DYRE. 

